Buggy code:
private void rewriteMethodBody ( MethodDeclaration parent , int startPos ) { } private int rewriteExtraDimensions ( ASTNode parent , StructuralPropertyDescriptor property , int pos ) { } private void rewriteExtraDimensions ( int oldDim , int newDim , int pos , TextEditGroup editGroup ) { } private int getPosAfterLeftBrace ( int pos ) { } final int getIndent ( int offset ) { } final void doTextInsert ( int insertOffset , ASTNode node , int initialIndentLevel , boolean removeLeadingIndent , TextEditGroup editGroup ) { } private boolean needsNewLineForLineComment ( ASTNode node , String formatted , int offset ) { } private String getCurrentLine ( String str , int pos ) { } private void rewriteModifiers ( ASTNode parent , StructuralPropertyDescriptor property , int offset ) { } class ModifierRewriter extends ASTRewriteAnalyzer . ListRewriter { private final ASTRewriteFormatter . Prefix annotationSeparation ; public ModifierRewriter ( ASTRewriteFormatter . Prefix annotationSeparation ) { } protected String getSeparatorString ( int nodeIndex ) { } } private int rewriteModifiers2 ( ASTNode node , ChildListPropertyDescriptor property , int pos ) { } private void replaceOperation ( int posBeforeOperation , String newOperation , TextEditGroup editGroup ) { } private void rewriteOperation ( ASTNode parent , StructuralPropertyDescriptor property , int posBeforeOperation ) { } public void postVisit ( ASTNode node ) { } public void preVisit ( ASTNode node ) { } final void doCopySourcePreVisit ( RewriteEventStore . CopySourceInfo [ ] infos , Stack nodeEndStack ) { } final void doCopySourcePostVisit ( ASTNode node , Stack nodeEndStack ) { } public boolean visit ( CompilationUnit node ) { } public boolean visit ( TypeDeclaration node ) { } private void rewriteReturnType ( MethodDeclaration node , boolean isConstructor , boolean isConstructorChange ) { } public boolean visit ( MethodDeclaration node ) { } public boolean visit ( Block node ) { } public boolean visit ( ReturnStatement node ) { } public boolean visit ( AnonymousClassDeclaration node ) { } public boolean visit ( ArrayAccess node ) { } public boolean visit ( ArrayCreation node ) { } private Type getElementType ( ArrayType parent ) { } private int getDimensions ( ArrayType parent ) { } public boolean visit ( ArrayInitializer node ) { } public boolean visit ( ArrayType node ) { } public boolean visit ( AssertStatement node ) { } public boolean visit ( Assignment node ) { } public boolean visit ( BooleanLiteral node ) { } public boolean visit ( BreakStatement node ) { } public boolean visit ( CastExpression node ) { } public boolean visit ( CatchClause node ) { } public boolean visit ( CharacterLiteral node ) { } public boolean visit ( ClassInstanceCreation node ) { } public boolean visit ( ConditionalExpression node ) { } public boolean visit ( ConstructorInvocation node ) { } public boolean visit ( ContinueStatement node ) { } public boolean visit ( DoStatement node ) { } public boolean visit ( EmptyStatement node ) { } public boolean visit ( ExpressionStatement node ) { } public boolean visit ( FieldAccess node ) { } public boolean visit ( FieldDeclaration node ) { } public boolean visit ( ForStatement node ) { } public boolean visit ( IfStatement node ) { } public boolean visit ( ImportDeclaration node ) { } public boolean visit ( InfixExpression node ) { } public boolean visit ( Initializer node ) { } public boolean visit ( InstanceofExpression node ) { } public void ensureSpaceAfterReplace ( ASTNode node , ChildPropertyDescriptor desc ) { } public void ensureSpaceBeforeReplace ( ASTNode node ) { } public boolean visit ( Javadoc node ) { } public boolean visit ( LabeledStatement node ) { } public boolean visit ( MethodInvocation node ) { } public boolean visit ( NullLiteral node ) { } public boolean visit ( NumberLiteral node ) { } public boolean visit ( PackageDeclaration node ) { if ( ! ( hasChildrenChanges ( node ) ) ) { return doVisitUnchangedChildren ( node ) ; } if ( ( node . getAST ( ) . apiLevel ( ) ) >= ( AST . JLS3 ) ) { int pos = rewriteJavadoc ( node , PackageDeclaration . JAVADOC_PROPERTY ) ; <START_BUG> rewriteNodeList ( node , PackageDeclaration . ANNOTATIONS_PROPERTY , pos , "" , "<seq2seq4repair_space>" ) ; <END_BUG> } rewriteRequiredNode ( node , PackageDeclaration . NAME_PROPERTY ) ; return false ; } public boolean visit ( ParenthesizedExpression node ) { } public boolean visit ( PostfixExpression node ) { } public boolean visit ( PrefixExpression node ) { } public boolean visit ( PrimitiveType node ) { } public boolean visit ( QualifiedName node ) { } public boolean visit ( SimpleName node ) { } public boolean visit ( SimpleType node ) { } public boolean visit ( SingleVariableDeclaration node ) { } public boolean visit ( StringLiteral node ) { } public boolean visit ( SuperConstructorInvocation node ) { } public boolean visit ( SuperFieldAccess node ) { } public boolean visit ( SuperMethodInvocation node ) { } public boolean visit ( SwitchCase node ) { } class SwitchListRewriter extends ASTRewriteAnalyzer . ParagraphListRewriter { private boolean indentSwitchStatementsCompareToCases ; public SwitchListRewriter ( int initialIndent ) { } protected int getNodeIndent ( int nodeIndex ) { } protected String getSeparatorString ( int nodeIndex ) { } protected void updateIndent ( int prevMark , int originalOffset , int nodeIndex , TextEditGroup editGroup ) { } } public boolean visit ( SwitchStatement node ) { } public boolean visit ( SynchronizedStatement node ) { } public boolean visit ( ThisExpression node ) { } public boolean visit ( ThrowStatement node ) { } public boolean visit ( TryStatement node ) { } public boolean visit ( TypeDeclarationStatement node ) { } public boolean visit ( TypeLiteral node ) { } public boolean visit ( VariableDeclarationExpression node ) { } public boolean visit ( VariableDeclarationFragment node ) { } public boolean visit ( VariableDeclarationStatement node ) { }

Fix:
rewriteModifiers2 ( node , PackageDeclaration . ANNOTATIONS_PROPERTY , pos ) ;